Display device
AssigneesHitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
InventorsIkuko Mori, Kikuo Ono
Life of this patent
Estimating the term…
Abstract
The present invention provides a display method realizing reduction in a moving picture blurring by forming one frame by two fields of different luminance, in which increase in an unapplied voltage due to shortening of data voltage write time is suppressed. A gate voltage is applied in a light field for a period of time which is twice as long as scan line selection time, thereby decreasing an unapplied voltage. On the other hand, a gate voltage is applied normally in a dark field for the scan line selection time, so that the case where the unapplied voltage increases is eliminated. As a result, an image with high reproducibility can be obtained.
Claims16
A display device comprising a number of pixels formed in a matrix and surrounded by a plurality of data signal lines extended in a vertical direction and arranged in a lateral direction and a plurality of scan lines extended in the lateral direction and arranged in the vertical direction,
- a scan line being selected by application of a gate voltage to the scan line, and a pixel voltage being supplied to pixels from a data signal line,
- wherein:
- data of three fields is generated from input image data of one frame, said one frame including said three fields, the three fields comprising a field of relatively high luminance, a field of intermediate luminance, and a field of relatively low luminance;
- the scan line is selected in a first period using a single-pulse writing, and the scan line is selected in a second period using a double-pulse wiring, wherein the second period is twice as long as the first period,
- at the time of generating an image of the field of relatively high luminance, a scan line connected to the pixel is selected using the double-pulse writing in one field;
- and
- at the time of generating an image of the field of relatively low luminance, the scan line connected to the pixel is selected using the single-pulse writing in one field.
A display device comprising a number of pixels formed in a matrix and surrounded by a plurality of data signal lines extended in a vertical direction and arranged in a lateral direction and a plurality of scan lines extended in the lateral direction and arranged in the vertical direction,
- a scan line being selected by application of a gate voltage to the scan line, and a pixel voltage being supplied to pixels from a data signal line,
- wherein:
- data of three fields is generated from input image data of one frame, said one frame including said three fields, the three fields comprising a field of relatively high luminance, a field of intermediate luminance, and a field of relatively low luminance;
- the scan line is selected in a first period using a single-pulse writing, and the scan line is selected in a second period using a double-pulse wiring, wherein the second period is twice as long as the first period,
- at the time of generating an image of the field of relatively high luminance, two kinds of image voltages are supplied successively from a data signal line to pixels using the double-pulse writing in one field;
- and
- at the time of generating an image of the field of relatively low luminance, one kind of image voltage is supplied from a data signal line to the pixels using the single-pulse writing in one field.
A display device comprising a number of pixels formed in a matrix and surrounded by a plurality of data signal lines extended in a vertical direction and arranged in a lateral direction and a plurality of scan lines extended in the lateral direction and arranged in the vertical direction,
- a scan line being selected by application of a gate voltage to the scan line, and a pixel voltage being supplied to pixels from a data signal line,
- wherein:
- the display device is configured to form a plurality of frames, each frame including four or more fields, and, in the case where data of four or more fields of different luminance including a field of maximum luminance and a field of minimum luminance is generated from input image data of one of the frames, and an image is formed by the four or more fields, in a method of driving a specific one of the fields, when two of the frames are successively selected,
- the scan line is selected in a first period using a single-pulse writing, and the scan line is selected in a second period using a double-pulse wiring, wherein the second period is twice as long as the first period;
- if a field of luminance lower than that of the specific field is sent before the specific field, a scan line connected to pixels is selected using the double-pulse writing in one field in the specific field;
- and
- when a field having luminance higher than that of the specific field is set before the specific field, a scan line connected to pixels in the specific field is selected using the single-pulse writing in one field.
Dependencies are inferred from the claim text.